Etude for Piano in Cis Minor, Op. 2 No 1

Recording identifiers

ISRC

DEA892200128

CopyrightID (CopyrightChains transaction hash)

0xb91287de418c2051990d5659a5b5d37a04b4ada2e4d62b0f2d913e8473ba2c4c

Copyright registration time

2026-07-31T11:25:20+00:00

OpenTimestamps proof evidence

Bitcoin-attested timestamp

2026-07-31T13:04:34Z

Bitcoin block

960403

Canonical record hash

sha256:d7b32d605404c5f3be8e13c27d547b6b43537a3451c226e7caa221628b694065

• Verify the CopyrightID on CopyrightChains
• Verify the Bitcoin block independently
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What this proof establishes

This recording belongs to ProofProfile's historical evidence base derived from the pre-2022 AcousticBrainz and MusicBrainz corpus. ISRC is the stable recording-level bridge from that source corpus to the authoritative cc-db-prod track record.

CopyrightChains and Bitcoin OpenTimestamps make the exact committed record independently verifiable today. The cryptographic proof does not by itself establish authorship or ownership of the underlying recording.

Read the complete pre-generative-AI provenance and verification method.